diff --git a/app/redis_cmds.go b/app/redis_cmds.go
index 3d25229..e9a1f78 100644
--- a/app/redis_cmds.go
+++ b/app/redis_cmds.go
@@ -93,11 +93,7 @@ func redisCmdDel(app *App, conn redcon.Conn, args []string) error {
 		return errors.New("wrong number of arguments for 'del' command")
 	}
 
-	keys := make([]string, len(args)-1)
-
-	for i, key := range args[1:] {
-		keys[i] = string(key)
-	}
+	keys := args[1:]
 
 	if err := app.cassandraDel(keys...); err != nil {
 		return fmt.Errorf("cassandra query: %w", err)
@@ -157,10 +153,7 @@ func redisCmdExists(app *App, conn redcon.Conn, args []string) error {
 		return errors.New("wrong number of arguments for 'exists' command")
 	}
 
-	keys := make([]string, len(args)-1)
-	for i, key := range args[1:] {
-		keys[i] = string(key)
-	}
+	keys := args[1:]
 
 	count, err := app.cassandraExists(keys...)
 	if err != nil {
diff --git a/readme.md b/readme.md
index f87a2d0..503e74b 100644
--- a/readme.md
+++ b/readme.md
@@ -4,7 +4,7 @@ This is a simple proxy that allows you to use Cassandra as a cache for Redis.
 
 ## Cassandra
 
-Requires a cassandra version 3.0 or higher. Also tested with YugabyteDB with the cassandra compatibility layer.
+Requires a cassandra version 3.0 or higher.
 
 ### Schema